Steel casting products are the most basic and important components of all kinds of equipment in modern equipment manufacturing industry. They will be used in all walks of life, especially in power generation, shipbuilding, oil and gas, mining machinery and other industries. A large number of steel casting products will be used. The quality of these products will often affect their service life, efficiency and maintenance cost.
With the application of steel castings in major projects, more and more attention has been paid to the welding repair technology and welding repair quality of steel castings. In the actual production process, some welding defects will inevitably occur due to the influence of welding process, product structure design, materials and production operation. The common main welding defects of large steel castings are slag inclusion, air hole, undercut, crack and so on. Combined with the actual production situation, summarize the main defects and put forward preventive measures for reference.
Due to the complex causes of steel casting welding defects, combined with the actual production experience, the main measures to prevent steel casting welding defects are put forward. In addition, reasonable solutions should be formulated according to the product structure characteristics, material characteristics and welding process control, hoping to help the welding workers, discuss and make progress together.